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1 /*
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2 * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
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3 * Universitaet Berlin. See the accompanying file "COPYRIGHT" for
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4 * details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
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5 */
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6
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7 /*$Header: /home/kbs/jutta/src/gsm/gsm-1.0/inc/RCS/gsm.h,v 1.5 1994/01/25 22:20:48 jutta Exp $*/
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8
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9 #ifndef GSM_H
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10 #define GSM_H
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11
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12 #ifndef NeedFunctionPrototypes
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13 #if defined(__cplusplus) || defined(__STDC__) || defined(VMS)
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14 # define NeedFunctionPrototypes 1
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15 #endif
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16 #endif
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17
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18 /* The above 5 lines used to be several #if ... it was changed to avoid
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19 * silly warnings and sintax errors of some compilers and to automate
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20 * symbol definition for VMS!
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21 * #ifdef __cplusplus
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22 * # define NeedFunctionPrototypes 1
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23 * #endif
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24 *
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25 * #if __STDC__
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26 * # define NeedFunctionPrototypes 1
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27 * #endif
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28 */
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29
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30 #ifdef _NO_PROTO
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31 # undef NeedFunctionPrototypes
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32 #endif
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33
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34 #ifdef GSM_P
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35 #undef GSM_P /* somewhere else may have defined this... */
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36 #endif
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37
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38 #ifdef NeedFunctionPrototypes
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39 # define GSM_P( protos ) protos
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40 #else
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41 # define GSM_P( protos ) ( /* protos */ )
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42 #endif
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43
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44 #ifdef NeedFunctionPrototypes
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45 # include <stdio.h> /* for FILE * */
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46 #endif
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47
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48 /*
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49 * Interface
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50 */
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51
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52 typedef struct gsm_state *gsm;
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53 typedef short gsm_signal; /* signed 16 bit */
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54 typedef unsigned char gsm_byte;
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55 typedef gsm_byte gsm_frame[33]; /* 33 * 8 bits */
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56
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57 #define GSM_MAGIC 0xD /* 13 kbit/s RPE-LTP */
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58
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59 #define GSM_PATCHLEVEL 3
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60 #define GSM_MINOR 0
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61 #define GSM_MAJOR 1
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62
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63 #define GSM_OPT_VERBOSE 1
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64 #define GSM_OPT_FAST 2
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65
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66
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67 /*
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68 * Prototypes generated automatically by cproto ...
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69 */
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70
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71 /* Prototypes for functions defined in file add.c */
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72 extern word gsm_add GSM_P((word a, word b));
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73 word gsm_sub GSM_P((word a, word b));
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74 word gsm_mult GSM_P((word a, word b));
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75 word gsm_mult_r GSM_P((word a, word b));
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76 word gsm_abs GSM_P((word a));
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77 longword gsm_L_mult GSM_P((word a, word b));
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78 longword gsm_L_add GSM_P((longword a, longword b));
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79 longword gsm_L_sub GSM_P((longword a, longword b));
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80 word gsm_norm GSM_P((longword a));
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81 longword gsm_L_asl GSM_P((longword a, int n));
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82 word gsm_asl GSM_P((word a, int n));
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83 longword gsm_L_asr GSM_P((longword a, int n));
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84 word gsm_asr GSM_P((word a, int n));
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85 word gsm_div GSM_P((word num, word denum));
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86
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87 /* Prototypes for functions defined in file code.c */
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88 void Gsm_Coder GSM_P((struct gsm_state * S, word * s, word * LARc,
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89 word * Nc, word * bc, word * Mc, word * xmaxc, word * xMc));
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90
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91 /* Prototypes for functions defined in file decode.c */
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92 void Gsm_Decoder GSM_P((struct gsm_state * S, word * LARcr, word * Ncr,
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93 word * bcr, word * Mcr, word * xmaxcr, word * xMcr, word * s));
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94
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95 /* Prototypes for functions defined in file long_term.c */
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96 void Gsm_Long_Term_Predictor GSM_P((struct gsm_state * S, word * d,
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97 word * dp, word * e, word * dpp, word * Nc, word * bc));
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98 void Gsm_Long_Term_Synthesis_Filtering GSM_P((struct gsm_state * S,
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99 word Ncr, word bcr, register word * erp, register word * drp));
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100
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101 /* Prototypes for functions defined in file lpc.c */
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102 void Gsm_LPC_Analysis GSM_P((struct gsm_state * S, word * s,
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103 word * LARc));
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104
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105 /* Prototypes for functions defined in file preprocess.c */
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106 void Gsm_Preprocess GSM_P((struct gsm_state * S, word * s, word * so));
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107
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108 /* Prototypes for functions defined in file rpe.c */
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109 void Gsm_RPE_Encoding GSM_P((struct gsm_state * S, word * e,
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110 word * xmaxc, word * Mc, word * xMc));
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111 void Gsm_RPE_Decoding GSM_P((struct gsm_state * S, word xmaxcr,
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112 word Mcr, word * xMcr, word * erp));
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113
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114 /* Prototypes for functions defined in file gsm_destroy.c */
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115 void gsm_destroy GSM_P((gsm S));
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116
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117 /* Prototypes for functions defined in file gsm_decode.c */
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118 int gsm_decode GSM_P((gsm s, gsm_byte * c, gsm_signal * target));
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119
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120 /* Prototypes for functions defined in file gsm_encode.c */
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121 void gsm_encode GSM_P((gsm s, gsm_signal * source, gsm_byte * c));
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122
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123 /* Prototypes for functions defined in file gsm_explode.c */
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124 int gsm_explode GSM_P((gsm s, gsm_byte * c, gsm_signal * target));
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125
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126 /* Prototypes for functions defined in file gsm_implode.c */
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127 void gsm_implode GSM_P((gsm s, gsm_signal * source, gsm_byte * c));
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128
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129 /* Prototypes for functions defined in file gsm_create.c */
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130 gsm gsm_create GSM_P((void));
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131
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132 /* Prototypes for functions defined in file gsm_print.c */
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133 int gsm_print GSM_P((FILE * f, gsm s, gsm_byte * c));
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134
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135 /* Prototypes for functions defined in file gsm_option.c */
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136 int gsm_option GSM_P((gsm r, int opt, int *val));
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137
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138 /* Prototypes for functions defined in file short_term.c */
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139 void Gsm_Short_Term_Analysis_Filter GSM_P((struct gsm_state * S,
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140 word * LARc, word * s));
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141 void Gsm_Short_Term_Synthesis_Filter GSM_P((struct gsm_state * S,
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142 word * LARcr, word * wt, word * s));
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143
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144 /* These prototypes only when debugging is enabled! */
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145 #ifndef NDEBUG
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146 void gsm_debug_words GSM_P((char *name, int from, int to, word * ptr));
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147 void gsm_debug_longwords GSM_P((char *name, int from, int to,
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148 longword * ptr));
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149 void gsm_debug_longword GSM_P((char *name, longword value));
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150 void gsm_debug_word GSM_P((char *name, word value));
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151 #endif
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152
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153 #undef GSM_P
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154
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155 #endif /* GSM_H */
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